Reaming drills are generally used for semi-finishing or final machining of holes, for pre-machining before grinding or grinding, or for expansion of blank holes. There are 3 to 4 land bands, no transverse edges, and cutting edges along the cutting edges The change is small, the guiding effect during processing is good, the axial resistance is small, and the cutting conditions are better than drilling. The Reaming Bit is a tool used to drill through holes or blind holes in solid materials, and can enlarge existing holes. Commonly used drill bits are twist drill, flat drill, center drill, deep hole drill and sleeve drill. Although reamers and countersinks cannot drill holes in solid materials, they are traditionally classified as drill bits. The following is how to use the drill bit provided by the editor of the hardware machine grid? What are the ways to use the drill bit? What are the precautions for using drill bits? The drill bit should be packed in a special packaging box to avoid collision between vibrations. When using it, remove the drill bit from the packaging box and install it in the spring collet of the spindle or in the tool magazine for automatic replacement of the drill bit. Put it back in the box immediately after use. Use a non-contact measuring instrument such as a tool microscope to measure the diameter of the drill bit to prevent the cutting edge from being damaged by contact with the mechanical measuring instrument. Some CNC drilling machines use a positioning ring. Some CNC drilling machines do not use a positioning ring. For example, the positioning depth of the positioning ring must be accurate when it is installed. Consistent, multi-spindle drilling machines should pay more attention to this point, so that the drilling depth of each spindle should be consistent. If it is inconsistent, it may cause the drill bit to reach the table or fail to penetrate the circuit board and cause scrap. Normally you can use a 40x stereo microscope to check the wear of the cutting edge of the drill. Always check the concentricity of the spindle and the spring chuck and the clamping force of the spring chuck. If the concentricity is not good, it will cause the drill with a small diameter to break and the hole diameter is large. The set speed does not match, and the chuck and the drill bit slip.
